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Finding the Fourth Proportional to 2,370.94, 3,555.87 and 639.70

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Solution

The fourth proportional to 2,370.94, 3,555.87 and 639.70 is: 959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,370.94 : 3,555.87 = 639.70 : x
  2. Step 2: Convert to fraction form
    2,370.94/3,555.87 = 639.70/x
  3. Step 3: Cross multiply
    2,370.94x = 3,555.87 × 639.70
  4. Step 4: Simplify right side
    2,370.94x = 2,274,690.04
  5. Step 5: Solve for x
    x = 2,274,690.04/2,370.94
  6. Step 6: Final answer
    x = 959.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.